Pharaoh Tutankhamun’s burial mask is the symbol of Egypt and one of the 10 symbols of our human civilization. The mask, which was discovered in 1922, has been through many wars and revolutions but was spoiled by the employees of the museum in 2014. They accidentally knocked off his beard and attempted to glue it back with an epoxy adhesive in order to hide their mistake, which brought even more harm to the artifact. The cheat was revealed in 2016 and shocked historians all over the world.